Electric wall switch



G. CORZAN-AVENDANO July 7, 1925.

ELECTRIC WALL SWITCH Filed Nov. 14. 1924 Patented July 7, 1925.

, UNITED STATES.

ENT

"GABon GOIR-ZAN-AVENDANO, or BUDAPEST, HUITGARY, ASSIGNOR TO' mrnA nmus TRIE-UND HANDELS AKTIENGESELLSCHAFT, or nunnrnsr, HUNGARY.

ELECTRIC WALL SWITCH.

Application filed November 14, 1924. Serial No. 749,977; 7

To all whom it may concern: 7

Be it known that I, Genoa ConzAN-ikvnrtv DANG, a Hungarian oitizen,res1d1ng at Izabella-utca 92, Budapest, V1, Hungary, have invented certain new and useful Improvements in Electric l-Vall Switches, of which the following is a specification. I

All the electric wall switches hlt-herto marketed are much more expensive, in consequence of their complicated construction, than ought to be the case for such small mechanisms. The complicated form of the individual bodies connected with one another on one hand, and the holding together of these parts, effected by means of screws,

makes the assembling, as well as the indi-' vidual parts, too costly. The material for the casing: glass, porcelain or china, by its liability to breakage, with the consequent necessity of replacing the broken casing by a new one, further increases the expense.

The present invention consists in an electrical wall switch, differing from the devices of that kind already known, which comprises a simple spring mechanism, easy to operate, secured by only two screws 1n a vulcanized india-rubber body, and in which the middle point of a cylindrical hollow in which curved spring parts bear serves as an axis of rotation.

One constructional form of the invention is illustrated in the accompanying drawing, wherein' Figure l-is a longitudinal section, and

Figure 2 an outside View of the switch.

Figure 3 is a side elevation. I

A soft iron strip a is bent cylindrlcally at its upper end at b, and is lodged in a corresponding cylindrical hollow in a vulcanite body 0. About the centre polnt d of thls hollow, a can spring blade and is likewise cylindrical guided alongthe inner side of the cylindrical soft iron strip a in such a way that it passes at h into a bore hole in the vulcanite body. To this end of the spring blade 7 there leads a bore hole 1' in the vulcanite body. At y' is arranged a spring clamping blade in such a way that the same lies in a wedge-shaped notch in the vulcanite body and is enclosed in a borehole at by one end like the blade .To the bore hole is there leads the bore hole Z, just as to h the bore hole i. m is a forked copper spring blade secured by a be rotated by a handle e. A f is secured to a by a rivet g,

riv t to the soft ironstrip. The fastening of the vulcanite body as a whole is efli'ecte by means of two screws passing through bore holes .0 and 2 through a plate r of wood, glass or the like bearing upon the wall.

The method of working of this invention is as. follows v The current led through a wire (not shown) passing through'the hole i passes through the spring blade f, then through the soft iron strip a, into the forkedcopper spring blade m. The soft iron strip a is held, during the state of rest, by the spring blade f as a switch in a; position which interrupts the circuit. As soon as a rotation has been effected with the handle e in the direction indicated by the arrow 14 in Figure 2 so far that the copperspring blade m snaps into the notch containing the spring blade j, the contact is closed.

The spring blade f arranged for carrying the current is so dimensioned that when supporting the requisite load, without becom- 7 ing too highly heated, it excludes any prejudicial influence on the spring action.

For ensuring complete contact of the parts 8 and t of the forked copper spring blade m, these arts (8 and t) are split. i

To acilitate manufacture a se ate cover '1) (Figure 3) may be fastened y two bore holes 0 and p with the same screws as c.

Any change in. the form of the casing or of the individual spring parts does not afiect the essence of the inventive idea, which consists in the fact that the handle requisite for switching is connected in a simple manner with the currentcarrying spring blade, and by arranging a copper or brass spring blade enables the contact to be manufactured without complicated parts'being employed.

' What I claim is v 1. An electrical wall switch comprising an insulating body, two poles for connection with the external conductors, a stationary current carrying blade in interlocking en-- gagement with the body and in permanent connection with one pole of the switch and shaped to form a clamp, a handle in interlocking engagement with the body and adapted for rocking movement therein so as to open and close the switch, a current carrying spring blade interengaged with the body and in permanent connection with the other pole of the switch and also in contact with the handle, and another spring blade fixed to the handle I and adaptedto engage the clamp when the handle is swung into closing position.

electrical Wall switch as claimed in claim Zip-further comprising a casing adapted to be seem-ed tothe insulating body and two screws for securing it thereto, said screws also serving to secure the entire switch to a wall.

p 3. An electrical wall switch comprising two "poles for connection to external conduci'nsulating body formed with a cylind "cal cavity therein and also with another cavity communicating with said cylindrical cavity; a metal strip bent round at one end to fit into "said cylinderical cavity so as to be capable of undergoing a partial rotation therein and extending at the other end into the communicating cavity, a current car ing blade secured to said metal strip and permanently communicating with one pole o-ftheswitch, a stationary current carrying blade permanently communicating with the other pole oi the switch, a handle for opening and closing the switch, said handle being secured to said metal strip so as to be capable of oscillating about the axis of the cylindrical cavity, and a further current carrying blade secured to the metal strip and adapted to make contact in one position or the handle with the stationary current carrying" blade. I

In testimony whereof I have signed my name to this specification.

GABoie CORZAN-AVENDANO. 

